Houston (IAH) to Louisville (SDF)
Flight time
≈ 2h 23m
Bearing
42° NE
Houston (IAH) to Louisville (SDF) is 788 miles (1,268 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAH–SDF
Filed traffic dataIn May 2026, Mesa Airlines operated the most departures, one of 3 carriers flying nonstop IAH–SDF; the Embraer E175 was the most common aircraft at 97% of departures; flights ran 71% full.
Departures
191
May 2026
Seats
14,358
both directions
Passengers
10,166
both directions
Load factor
70.8%
RPM ÷ ASM
Who flies IAH–SDF?
Mesa Airlines operated the most nonstop IAH–SDF departures in May 2026 (185), one of 3 carriers on the route.
- YV
185 departures · 13,388 seats
Share of departures96.9%72.1%
Load
- UA
5 departures · 842 seats
Share of departures2.6%46.4%
Load
- AA
1 departures · 128 seats
Share of departures0.5%96.1%
Load
What plane flies IAH–SDF?
In May 2026, the Embraer E175 flew 97% of IAH–SDF departures — more than any other aircraft type.
- Embraer E175
185 departures · 72.1% load
96.9% - Airbus A319
2 departures · 65.8% load
1.1% - Boeing 737 MAX 9
2 departures · 48.6% load
1.1% - Boeing 737-900ER
2 departures · 48.3% load
1.1%
How has IAH–SDF traffic changed?
Nonstop IAH–SDF departures rose from 172 in June 2025 to 191 in May 2026.
Monthly nonstop IAH–SDF traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
172 departures · 10,809 passengers
84.9%
Load
July 2025
174 departures · 10,772 passengers
84.3%
Load
August 2025
180 departures · 10,090 passengers
75.5%
Load
September 2025
179 departures · 10,754 passengers
81.2%
Load
October 2025
186 departures · 11,202 passengers
81.5%
Load
November 2025
173 departures · 8,808 passengers
69.0%
Load
December 2025
183 departures · 10,629 passengers
78.7%
Load
January 2026
164 departures · 9,088 passengers
74.7%
Load
February 2026
158 departures · 9,350 passengers
81.2%
Load
March 2026
164 departures · 9,181 passengers
76.5%
Load
April 2026
184 departures · 10,136 passengers
73.0%
Load
May 2026
191 departures · 10,166 passengers
70.8%
Load
By direction
Each direction is filed separately — they rarely match.
IAH → SDF
66.6% full
96 departures · 4,804 passengers
SDF → IAH
75.1% full
95 departures · 5,362 passengers
Nonstop IAH–SDF traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Louisville
US
Louisville Muhammad Ali International Airport
Coordinates
38.17°N, 85.74°W
Hemisphere
N · W
Frequently asked
How far is Houston (IAH) from Louisville (SDF)?
IAH to SDF is 788 miles (1,268 km / 685 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAH to SDF?
A nonstop covers the 788-mile great-circle distance in roughly 2h 23m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAH–SDF?
In May 2026, the Embraer E175 flew the largest share of departures (96.9%), followed by the Airbus A319 (1.1%).
What mileage do I earn flying IAH–SDF?
Distance-based programs credit off the 788-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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